Rolf de Graaff

I read some good stories about these discs on Porsche forums but has anybody exprerience with these on a Mercedes C63?

mr747

I think acg stock these discs

I will make the purchase once I need discs

Manofsteelpt

Picked up a set for all 4 corners for my CLS63, getting them installed soon and will report back... Got mine from Tal at ACG, great guy and flawless transaction.

Diabolis

I've had the slotted ones on one of my P-cars and they were good (no warping or cracks even with track use and very abrasive track pads), but I don't see any that fit the C63. The only aftermarket "high-performance" rotors for the C63 that I know of are RB (Racing Brake?) and Evosport (no personal experience w/ either). Where did you see the Giros that fit the C?

604 C63

I have them in place of the stock P30 rotors. Got them from ACG. Cant say Im sophisticated enough of a driver to say I notice a different in feel EXCEPT I do think they do a little better in the wet. I have had them since mid summer of 2013, and they seem to be holding up well. I do about 90% city, 10% highway, and 10% track. Yes, I know. I drive more than most so equals 110%

604 C63

Oh, and I believe they are about 5 lbs a corner lighter than stock, and as well they are equipped with truly directional cooling vanes, unlike the stock 2 piece P30 rotors which are the same on either side.

natman316

how much do these rotors cost? i'm thinking about replacing my rotors because the stock one is all cracked

Diabolis

That's great news if they exist for the C63. You wouldn't experience any difference in brake feel because of the rotor change. The cross-drilled ones look nice but they all crack around the holes under heavy (i.e. track) use. Slotted is all you need for outgassing, plus a proper two-piece rotor allows you to replace the rotor and leave the hat in place. That would be the way to go, especially on the P31 cars with the "1.5 piece" rotors that are fused to the hats and are not individually replaceable.

charliekay

Girodisc made the Evosport rotors, these are the same ones.

It is a 40lbs reduction in weight over the OEM P30 rotors. This includes front and rear for the drilled and slotted, they also make slotted only which would be slightly heavier.

These are a direct replacement for OEM rotors and are directional.

Rolf de Graaff

Mine should arrive somewhere next week so I will let you know.
I have ordered them directly from Girodisc.
You can also get colored centrepieces which I did like but since I will get new Vossen wheels in bronze next month I stayed with standard grey.
I payed 1530,- dollar including new pads and shipping to europe, so i think it's a good deal

Manofsteelpt

Just for fronts I presume?

Diabolis

Great information here.

IIRC, the P30 rotors were actually two-piece (steel rotor & aluminum hat) and Evosport claims a 26lb saving over the P30s (the 40lb saving is over the one-piece steel rotors), which is still very significant. Good to know the Evosports are made by Girodisc.

Kriston

Rolf is the 1530 for front and rear rotors + pads?

If so that's a great deal.

604 C63

Yes, they are definitely a reusable hat, which they are not on the P30/P31

604 C63

That sounds about right, although in the P30/P31 the rear rotors are the same as on the normal model. They are a one piece rotor.

604 C63

Yes, now that I think back on it, I believe you are correct with the 26lb figure - 8lbs per corner in the front and 5 lbs per corner in the rear. Or vice versa. Im getting old and the RAM is in limited supply. Once I dont need the data anymore I clear the cache and move on.

Diabolis

The P30 originally had a proper two-piece on the front, which I suspect has now been superseded by the "1.5-piece" P31 rotor. See https://mbworld.org/forums/w211-amg/...-manifold.html for pics. And yes, the rears were always steel, so I suspect the higher weight saving was at the back.


My own RAM is in short supply too, plus my OS has numerous memory leaks.

Rolf de Graaff

No it is only for the front but including new pads and 230 dollar for shipping to europe, so still a good deal i think

Rolf de Graaff

discs mounted.
All went easy, only the hole for the fixing screw is missing but once in place and the wheel bolted on it's no problem.
They look big under the car. I also like the grey/blue color of the hub.
Since my old discs/pads were badly worn, it's difficult to tell if they brake better because everything brakes better then,
They may be lighter than std discs but certainly not lighter than P30/31

CarHopper

You say the hole for the fixing screw is missing... What is the 6th hole for?

Rolf de Graaff

to suit a E55 I think. Because the typenumber also mentions E55

awasak17

are those red lug bolts I see or just covers? If they are please tell me where did you purchase them from!

Rolf de Graaff

I bought them on ebay, search for lug nut covers and you will find companies in the UK which sell them

Ezec63

The giro disc breaks are actually quite a bit lighter then p30 disc. P31 didnt get the "2 piece" that were 1.5 piece really that the p30 got.

I measured my front girodisc brakes were over 13 pound lighter EACH in the front and over 6 pounds each in the rear. I had standard one piece calipers but the difference in steering feel was big the car felt a good amount more agile especially on aggressive turn in. Def didnt notice much on acceleration but im sure it helps a bit

awasak17

Thanks found them